Understanding Map Scale: Large Scale Versus Small Scale Maps

00:05:18
https://www.youtube.com/watch?v=PmTCxRWEwms

摘要

TLDRDie video verduidelik waarom die begrip van skaal op kaarte noodsaaklik is. Skaal is 'n kompromie om geografiese inligting te vereenvoudig. Groot-skaal kaarte wys kleiner gebiede met meer detail, terwyl klein-skaal kaarte groter gebiede met minder detail toon. Skaal kan as 'n grafiese vaandel, verbale skaal, of verteenwoordigende fraksie op kaarte verskyn. Verduidelik ook die kuslynparadoks, waar verskillende mates van 'n kuslyn voorkom as gevolg van skaalverskille. Laastens doen die video aan dat kaarte weergawes van die werklikheid is en groter skaal meer akkuraatheid bied.

心得

  • 🗺️ Skaal is 'n kompromie in kaartontwerp.
  • 📏 Groot-skaal kaarte toon meer detail.
  • 🌍 Klein-skaal kaarte dek groter gebiede.
  • 🔄 Skaal kan as 'n verhouding, verbaal, of grafies op kaart wees.
  • 🌊 Dit verduidelik die kuslyn paradoks.
  • 🧭 Kaarte is modelle van die werklikheid.
  • ⚖️ Groot skaal wys akkurater detail.
  • 🛠️ Skaal vereenvoudig gegewens op kaarte.

时间轴

  • 00:00:00 - 00:05:18

    Die begrip van skaal wanneer met kaarte gewerk word, is noodsaaklik omdat alle data 'n gemodelleerde werklikheid van die aarde verteenwoordig. Dit is onmoontlik om alle inligting vanaf die werklike wêreld op 'n kaart te plaas, daarom moet daar kompromieë aangegaan word. Skaal is een van hierdie kompromieë wat gebruikers help om die mate van vereenvoudiging van geografiese inligting op 'n kaart te verstaan.

思维导图

Mind Map

常见问题

  • Wat is die verskil tussen groot-skaal en klein-skaal kaarte?

    Groot-skaal kaarte toon kleiner geografiese gebiede met meer detail, terwyl klein-skaal kaarte groter gebiede met minder detail wys.

  • Hoe beïnvloed skaal die detail op 'n kaart?

    Hoe groter die skaal (meer detail), hoe kleiner die geografiese area wat gewys word. Kleiner skale wys groter areas met minder detail.

  • Wat is 'n grafiese of staafskaal op 'n kaart?

    'n Grafiese of staafskaal is 'n visuele voorstelling van skaal, wat soos 'n liniaal op die kaart funksioneer om afstande aan te dui.

  • Wat is die kuslyn paradoks?

    Die kuslyn paradoks is die konsep dat die lengte van 'n kuslyn verskil, afhangend van die kaart se skaal of detail vlak wat gebruik word om dit te meet.

  • Hoe word skaal tipies beskryf op 'n kaart?

    Skaal word dikwels beskryf deur 'n grafiese/staafskaal, verbale skaal, of 'n verteenwoordigende fraksie.

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  • 00:00:06
    understanding scale when working with
  • 00:00:09
    maps is important because all data
  • 00:00:11
    represents a modeled reality of the
  • 00:00:14
    earth it's not possible to put all the
  • 00:00:16
    information we find in the real world
  • 00:00:18
    onto a map so we have to make
  • 00:00:21
    compromises scale is one of those
  • 00:00:23
    compromises scale lets the user
  • 00:00:26
    understand the degree to which
  • 00:00:28
    geographic information has been
  • 00:00:30
    simplified on a map you may have noticed
  • 00:00:33
    the effect of scale on what features are
  • 00:00:35
    shown when you zoom in on an online map
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    like Google Maps
  • 00:00:41
    map scale is typically described in two
  • 00:00:44
    different ways there are large scale
  • 00:00:46
    maps and there are small scale maps
  • 00:00:51
    large scale maps show a smaller
  • 00:00:54
    geographic area but typically contain a
  • 00:00:57
    higher or larger amount of detail
  • 00:01:01
    small-scale maps tend to show a larger
  • 00:01:05
    geographic area but contain less detail
  • 00:01:08
    or a smaller amount of detail
  • 00:01:14
    one way to understand the scale of a map
  • 00:01:17
    is to look for the scale representation
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    on the map scale is a ratio of what
  • 00:01:22
    distance on the map represents the
  • 00:01:25
    distance in the real world there are
  • 00:01:28
    three main ways that scale might be
  • 00:01:30
    shown on a map there's a graphic or bar
  • 00:01:33
    scale a verbal scale or a representative
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    fraction bar graphs are a way to
  • 00:01:39
    visually represent scale essentially bar
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    graphs serve as a ruler that shows how
  • 00:01:46
    the distance on a map represents a
  • 00:01:48
    distance on the ground verbal scales use
  • 00:01:51
    a ratio of one type of unit on the map
  • 00:01:54
    to indicate the distance that that unit
  • 00:01:57
    represents on the ground for example one
  • 00:02:01
    inch equals 100 feet this means that one
  • 00:02:04
    inch on the map represents 100 feet on
  • 00:02:08
    the ground
  • 00:02:10
    representative fractions is similar to
  • 00:02:13
    verbal scales but it's independent of
  • 00:02:15
    any specific type of measurement unit
  • 00:02:18
    for example you may see a 1 to 100 ratio
  • 00:02:24
    this means that the unit on each side of
  • 00:02:27
    the colon is the same therefore in this
  • 00:02:31
    example of 1 to 100 it could mean one
  • 00:02:34
    inch equals 100 inches on the ground
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    the same map holds true for one
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    centimeter on the map is equal to 100
  • 00:02:43
    centimeters on the ground the type of
  • 00:02:46
    unit doesn't matter
  • 00:02:49
    the larger the number that the map
  • 00:02:52
    distance represents on the scale
  • 00:02:54
    indicator the smaller the scale of the
  • 00:02:56
    map
  • 00:02:59
    this can be confusing to many but think
  • 00:03:02
    of it in this way the small and small
  • 00:03:04
    scale refers to the small amount of
  • 00:03:07
    detail represented on the map so why is
  • 00:03:11
    scale important well here's one
  • 00:03:13
    hypothetical a geography professor asked
  • 00:03:16
    three students to find Geographic data
  • 00:03:18
    and measure the coastline of Britain
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    student a comes back with 2,400
  • 00:03:24
    kilometers student B comes back with
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    2800 kilometers and student C comes back
  • 00:03:30
    with three thousand four hundred
  • 00:03:31
    kilometers
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    which student got it right well actually
  • 00:03:37
    the professor says all the students are
  • 00:03:40
    correct so how can this be this problem
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    is known as the coastline paradox
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    remember that smaller scale Maps
  • 00:03:49
    compromise showing a greater area by
  • 00:03:52
    simplifying the geography as you have
  • 00:03:56
    learned large-scale maps contain more
  • 00:03:59
    detail than small-scale maps this figure
  • 00:04:03
    shows an underlying map of a highly
  • 00:04:05
    detailed British coastline the orange
  • 00:04:08
    line on top shows how the coastline is
  • 00:04:11
    drawn based on the scale of the data the
  • 00:04:13
    map on the far left is a small scale map
  • 00:04:16
    and the orange boundary is very
  • 00:04:18
    generalized or simplified the map on the
  • 00:04:23
    far right represents the largest scale
  • 00:04:26
    and contains a far greater amount of
  • 00:04:28
    detail in the nooks and crannies of the
  • 00:04:30
    coastline if you were to straighten out
  • 00:04:33
    the coastline all of those nooks and
  • 00:04:35
    crannies add a great deal of length to
  • 00:04:38
    the total
  • 00:04:40
    so this has been a quick presentation on
  • 00:04:43
    understanding math scale the key points
  • 00:04:46
    to remember are that maps are
  • 00:04:48
    representation of reality and map scale
  • 00:04:51
    affects how accurate that representation
  • 00:04:53
    is large scale maps show a smaller area
  • 00:04:57
    with more detail and tend to be more
  • 00:04:59
    accurate small scale maps show a larger
  • 00:05:02
    area less detail and tend to be less
  • 00:05:05
    accurate
标签
  • skaal
  • kaarte
  • geografie
  • werklikheid
  • detail
  • vergelyking
  • paradoks